Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c5e8699a7107506…

MALICIOUS

PDF

44.5 KB Created: 2020-08-14 01:02:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e6b1b6cbf2ac7ebbac5d74c8137c262 SHA-1: e07cd1fd249e050285410ba1da7db904d0385227 SHA-256: 3c5e8699a710750639f8d57bfe30046d8e4aa6c3ce04a6f23c40c5014d8e4cf2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). The document body, though heavily obfuscated, contains the string "Sky sports guide" and a URL that appears to be the same malicious redirector. This suggests a phishing or scam attempt using a link farm to obscure the final malicious destination.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=sky+sports+guide
    • http://fizamavel.ketchikanwhales.com/uploads/1/3/2/8/132814194/8985489.pdf
    • http://files.iristsang.com/uploads/1/3/1/4/131407061/perelo_xulebafagivazil.pdf
    • http://files.billstrom.ca/uploads/1/3/1/0/131069819/mowojudalav.pdf
    • https://cdn.shopify.com/s/files/1/0430/5793/8581/files/warera.pdf
    • https://cdn.shopify.com/s/files/1/0437/2240/8087/files/pdf_on_kindle_paperwhite.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/gigib.pdf
    • https://cdn.shopify.com/s/files/1/0428/8793/8211/files/82485829115.pdf
    • https://cdn.shopify.com/s/files/1/0434/0128/1701/files/64129389076.pdf
    • https://cdn.shopify.com/s/files/1/0440/4566/4406/files/zusinere.pdf
    • https://cdn.shopify.com/s/files/1/0432/7689/4372/files/carbon_footprint_activity.pdf
    • https://cdn.shopify.com/s/files/1/0431/6993/9612/files/gexatijax.pdf
    • https://cdn.shopify.com/s/files/1/0432/4445/4051/files/gazanojosazasofip.pdf
    • https://cdn.shopify.com/s/files/1/0431/6459/8434/files/gibifejofuwazos.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/28864897207.pdf
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/61728861301.pdf
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/dozunevofakeguse.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9760/files/jetoterewejefubu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006550.bin
026ac599bf460de1eff9d0c3ae2207a35cf2e0d4f640e59ea436d6ed5af05a4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6550 5152 bytes
font_01_sfnt_off000076f1.bin
5c3ba0cc5d688b9076edc1610366a3f747f69e575706346b89c80b6097a1c675		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76F1 14840 bytes

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